this is a problem with the latest steam update, it has done this to many (if not all) of the CS bots, and there needs to be a code change in the IVPbot coding, but KaCaT is probs v. busy atm as he has not been able to update it
here is another link to a similar post in the forum; please use the search feature, its there for a reason! :
http://forums.bots-united.com/showthread.php?t=4385